Low Fertility Soil Improvers

I've got several compost piles going, but til they're ready I've soaked various green materials for days on end, stirring several times per day. The little scrap of yard I do have I don't fertilize or add herbicide. I've been soaking grass clippings for in/around 3 days and applying the finished 'juice' in some of my prepped beds.

Does anyone here use a similar practice? Is soaking grass and stirring the pot effective in your experience as a low fertility improver? I'm guessing it's not really noticeable, yet in the back of your mind you imagine that it doesn't hurt. There's a lot of life in there.

Post experiences and even other ideas for ways to re-use green waste. Peace -